Anesthetic Potency of Remifentanil in Dogs

Abstract

Remifentanil is equally efficacious and about half as potent as fentanyl, judging from the blood concentrations causing equivalent reductions in enflurane MAC in the dog. The characteristics of MAC reduction are similar to those of other opioids, including the ceiling effect. Recovery from remifentanil anesthesia is much more rapid than for any other opioid studied to date, especially after continuous infusions maintained for 6 or more h.